mining

Thorsby Colliery,
A little delay but here we are,
Slight wikipedia copyright but I'll credit below
Thoresby colliery opened in 1925,
The first two shafts in 1925 were sunk to 690 metres (2,260 ft). The shafts were deepended by 109 metres (358 ft) in the 1950s. After privatization of the...